---
product_id: 3981525
title: "Motorcycle Oil Filter: High Performance, Premium, Designed to be used with Synthetic or Conventional Oils, Wrench Off Nut: Fits Select Harley Davidson Motorcycles, KN-171B"
brand: "k&n"
price: "€ 33.86"
currency: EUR
in_stock: true
reviews_count: 13
category: "K&N"
url: https://www.desertcart.es/products/3981525-motorcycle-oil-filter-high-performance-premium-designed-to-be-used
store_origin: ES
region: Spain
---

# High flow rate for peak engine performance Wrench-off nut for effortless removal Synthetic-blend media traps harmful contaminants Motorcycle Oil Filter: High Performance, Premium, Designed to be used with Synthetic or Conventional Oils, Wrench Off Nut: Fits Select Harley Davidson Motorcycles, KN-171B

**Brand:** k&n
**Price:** € 33.86
**Availability:** ✅ In Stock

## Summary

> 🛵 Ride Clean, Ride Confident: The Ultimate Oil Filter Upgrade for Your Harley

## Quick Answers

- **What is this?** Motorcycle Oil Filter: High Performance, Premium, Designed to be used with Synthetic or Conventional Oils, Wrench Off Nut: Fits Select Harley Davidson Motorcycles, KN-171B by k&n
- **How much does it cost?** € 33.86 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.es](https://www.desertcart.es/products/3981525-motorcycle-oil-filter-high-performance-premium-designed-to-be-used)

## Best For

- k&n enthusiasts

## Why This Product

- Trusted k&n brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Proven Reliability:** Laboratory tested with a 1-year limited warranty—trusted by thousands of riders
- • **Extended Service Ready:** High capacity filtration supports longer intervals, keeping your Harley running smoother, longer
- • **Unmatched Flow Efficiency:** Engineered for exceptional oil flow to maximize power and longevity
- • **Universal Oil Compatibility:** Seamlessly works with synthetic, conventional, and blended oils—ride your way
- • **Durability Meets Convenience:** Heavy-duty steel/aluminum canister with a 17mm wrench-off nut for quick, no-fuss changes

## Overview

The K&N KN-171B Motorcycle Oil Filter is a premium, high-performance filter designed specifically for select Harley Davidson models. Featuring a synthetic-blend filtration media, it ensures superior contaminant removal while supporting high oil flow rates. Its heavy-duty steel and aluminum construction includes a convenient 17mm wrench-off nut for easy installation and removal. Compatible with synthetic, conventional, and blended oils, this filter is built to endure extended service intervals and is backed by a 1-year limited warranty, making it a trusted choice for serious riders.

## Description

K&N premium oil filters for powersports vehicles utilize an innovative, highly efficient synthetic-blend filtration media designed to be compatible with synthetic, petroleum-based, and blended oils, including the high concentrations of synthetic racing oils. The heavy-duty canister is engineered to be exceptionally durable, and a 17mm welded hex nut can be used for quick and easy filter removal. Engineered to support exceptionally high flow rates while providing outstanding protection from harmful engine contaminants, each filter is specifically designed to withstand the service intervals recommended by vehicle manufacturers, and is protected by the K&N 1-Year Limited Warranty.Compatible Vehicles:2018-2021 HARLEY DAVIDSON FLFBS Fat Boy2021 HARLEY DAVIDSON FLH Electra Glide Revival2018-2021 HARLEY DAVIDSON FLHC Heritage Classic2018-2021 HARLEY DAVIDSON FLHCS Heritage Classic1999-2021 HARLEY DAVIDSON FLHR Road King2017-2021 HARLEY DAVIDSON FLHRXS Road King Special1999-2021 HARLEY DAVIDSON FLHT Electra Glide Standard2014-2021 HARLEY DAVIDSON FLHTCUTG Tri Glide Ultra2021 HARLEY DAVIDSON FLHTCUTGSE CVO Tri Glide2015-2021 HARLEY DAVIDSON FLHTK Ultra Limited2014-2021 HARLEY DAVIDSON FLHTKSE CVO Limited2006-2021 HARLEY DAVIDSON FLHX Street Glide2014-2021 HARLEY DAVIDSON FLHXS Street Glide Special2010-2021 HARLEY DAVIDSON FLHXSE CVO Street Glide2015-2021 HARLEY DAVIDSON FLRT Freewheeler2018-2021 HARLEY DAVIDSON FLSB Sport Glide2018-2021 HARLEY DAVIDSON FLSL Softail Slim2021 HARLEY DAVIDSON FLTRK Road Glide Limited2015-2021 HARLEY DAVIDSON FLTRX Road Glide2016-2021 HARLEY DAVIDSON FLTRXS Road Glide Special2018-2021 HARLEY DAVIDSON FLTRXSE CVO Road Glide2021 HARLEY DAVIDSON FXBBS Street Bob2018-2021 HARLEY DAVIDSON FXBRS Breakout2018-2021 HARLEY DAVIDSON FXFBS Fat Bob2021 HARLEY DAVIDSON FXLRS Low Rider S2021 HARLEY DAVIDSON FXST Softail Standard 1072018-2020 HARLEY DAVIDSON FLDE Deluxe2018-2020 HARLEY DAVIDSON FLFB Fat Boy2009-2020 HARLEY DAVIDSON FLHP Road King Police2015-2020 HARLEY DAVIDSON FLHTKL Ultra Limited Low2018-2020 HARLEY DAVIDSON FXBB Street Bob2018-2020 HARLEY DAVIDSON FXFB Fat Bob2018-2020 HARLEY DAVIDSON FXLR Low Rider1999-2019 HARLEY DAVIDSON FLHRCI Road King Classic F/I2012-2019 HARLEY DAVIDSON FLHTCU Electra Glide Ultra Classic2009-2019 HARLEY DAVIDSON FLTRSE3 CVO Road Glide2011-2019 HARLEY DAVIDSON FLTRU Road Glide Ultra2018-2019 HARLEY DAVIDSON FXBR Breakout2019 HARLEY DAVIDSON FXDRS FXDR2013-2017 HARLEY DAVIDSON FLS Softail Slim2017 HARLEY DAVIDSON FLSS Softail Slim S2000-2017 HARLEY DAVIDSON FLSTC Heritage Softail Classic2000-2017 HARLEY DAVIDSON FLSTF Fat Boy2010-2017 HARLEY DAVIDSON FLSTFB Softail Fat Boy Lo2016-2017 HARLEY DAVIDSON FLSTFBS Fat Boy S2005-2017 HARLEY DAVIDSON FLSTN Softail Deluxe2007-2017 HARLEY DAVIDSON FXDB Street Bob2008-2017 HARLEY DAVIDSON FXDF Fat Bob1999-2017 HARLEY DAVIDSON FXDL Dyna Low Rider2014-2017 HARLEY DAVIDSON FXDL Low Rider2017 HARLEY DAVIDSON FXDLS Low Rider S1999-2017 HARLEY DAVIDSON FXDWG Dyna Wide Glide2013-2017 HARLEY DAVIDSON FXSB Breakout2017 HARLEY DAVIDSON FXSE CVO Pro Street Breakout2012-2016 HARLEY DAVIDSON FLD Switchback2016 HARLEY DAVIDSON FLD Switchback - Non-US2015-2016 HARLEY DAVIDSON FLHTCUL Electra Glide Ultra Classic Low2011-2016 HARLEY DAVIDSON FLTRUSE CVO Road Glide Ultra2016 HARLEY DAVIDSON FXDF Fat Bob - Non-US2016 HARLEY DAVIDSON FXDL Dyna Low Rider - Non-US2016 HARLEY DAVIDSON FXDWG Dyna Wide Glide - Non-US2015-2016 HARLEY DAVIDSON XL1200C Sportster Custom2015-2016 HARLEY DAVIDSON XL1200X Forty-Eight2014-2015 HARLEY DAVIDSON FLSTNSE CVO Softail Deluxe2014 HARLEY DAVIDSON FLHRSE6 CVO Road King2013-2014 HARLEY DAVIDSON FLHTCUSE8 CVO Ultra Classic Electra Glide F/I2010-2014 HARLEY DAVIDSON FLHTK Electra Glide Ultra Limited2010-2014 HARLEY DAVIDSON FLTRX Road Glide Custom2007-2014 HARLEY DAVIDSON FXDC Super Glide Custom2013-2014 HARLEY DAVIDSON FXSBSE CVO Breakout2007-2013 HARLEY DAVIDSON FLHRC Road King Classic2013 HARLEY DAVIDSON FLHRSE5 CVO Road King2002-2013 HARLEY DAVIDSON FLHTC Electra Glide Classic2007-2013 HARLEY DAVIDSON FLHTCU Ultra Classic Electra Glide2009-2013 HARLEY DAVIDSON FLHTCUTG Tri Glide Ultra Classic2007-2013 HARLEY DAVIDSON FLTR Road Glide2013 HARLEY DAVIDSON FLTRXSE2 CVO Road Glide Custom2012-2013 HARLEY DAVIDSON FXS Blackline2012 HARLEY DAVIDSON FLHTCUSE7 CVO Ultra Classic Electra Glide2012 HARLEY DAVIDSON FLHXSE3 CVO Street Glide2010-2012 HARLEY DAVIDSON FLSTSE CVO Softail Convertible2012 HARLEY DAVIDSON FLSTSE3 CVO Softail Convertible

Review: Great filter for my harley - Never an issue, easy on and off with no leaking
Review: I run K&N in all my motorcycles - This is absolutely the best motorcycle oil filter out there. On a Harley, 5k miles between oil changes might be stretching it. Filters eventually get clogged even on engines that have no excessive wear problems. The more filter material the filter has the longer it will go before clogging. The ability to remove this filter with a standard socket is a nice plus.

## Features

- HIGH FLOW RATES: Designed to provide exceptional flow rates and a consistent flow of oil to your engine
- VERSATILE COMPATIBILITY: Designed to operate with all synthetic, conventional, and blended motor oils
- PROTECT YOUR ENGINE: Pleated synthetic-blend filtration media removes most harmful contaminants
- EXTENSIVELY TESTED: Laboratory tested to ensure excellent capacity and burst strength
- EASY TO REMOVE: Fast and easy Wrench-Off removal
- HEAVY-DUTY CONSTRUCTION: Heavy-duty canister for outstanding durability
- NO-HASSLE WARRANTY: 1-Year Limited Warranty
- HIGH CAPACITY: Withstand the longer service intervals now recommended by some vehicle manufacturers

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000FGI6E6 |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #4,590 in Automotive ( See Top 100 in Automotive ) #3 in Powersports Oil Filters |
| Brand | K&N |
| Customer Reviews | 4.8 4.8 out of 5 stars (5,991) |
| Date First Available | August 1, 2007 |
| Exterior | Other |
| Global Trade Identification Number | 00024844087737 |
| Is Discontinued By Manufacturer | Yes |
| Item Weight | 9.6 ounces |
| Item dimensions L x W x H | 4 x 3 x 3 inches |
| Item model number | KN-171B |
| Manufacturer | K&N Engineering |
| Manufacturer Part Number | KN-171B |
| Material | Synthetic-Blend (Filter Media), Steel/Aluminum (Housing) |
| Model | Oil Filter |
| Number of Items | 1 |
| OEM Part Number | KN-171B |
| Outside Diameter | 2.91 Inches |
| Product Dimensions | 4 x 3 x 3 inches |
| Product Grade | Performance Part |
| Safety Rating | Não Aplicável |
| Thread Size | M17 x 1.5 |
| UPC | 759173941725 182683047043 024844087737 |
| Vehicle Service Type | Motorcycle |

## Product Details

- **Brand:** K&N
- **Item dimensions L x W x H:** 4 x 3 x 3 inches
- **Material:** Synthetic-Blend (Filter Media), Steel/Aluminum (Housing)
- **Product Grade:** Performance Part
- **Vehicle Service Type:** Motorcycle

## Images

![Motorcycle Oil Filter: High Performance, Premium, Designed to be used with Synthetic or Conventional Oils, Wrench Off Nut: Fits Select Harley Davidson Motorcycles, KN-171B - Image 1](https://m.media-amazon.com/images/I/615VVLBFeZL.jpg)

## Questions & Answers

**Q: Amazon needs to fix the fact that this filter does in fact, fit a 2018 harley davidson fat bob fxfb... cuz i use it all the time.**
A: You can go the K&N webpage (link below) for this particular filter.  There is a fitment guide there.   According to that website this will fit a 2010 Fat Bob and several others.

**Q: does this filter a kn171b replace a 63798-99A**
A: The 63798-99A would cross-reference to the K&N KN-171B Oil Filter.

**Q: Can I use this filter on my 2019 fatboy 107?**
A: Not sure. A 2002 Lexus 300 SUV is the same filter as this I do know.

**Q: Will this work on a2016 wide glide 103 engine**
A: This fit the 103 Harley Twin I have. Ultimately, put your make and model into your garage in Amazon and it will let you know if it applies. I suspect it will fit all 103 engines.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great filter for my harley
*by J***. on November 15, 2025*

Never an issue, easy on and off with no leaking

### ⭐⭐⭐⭐⭐ I run K&N in all my motorcycles
*by F***K on December 10, 2025*

This is absolutely the best motorcycle oil filter out there. On a Harley, 5k miles between oil changes might be stretching it. Filters eventually get clogged even on engines that have no excessive wear problems. The more filter material the filter has the longer it will go before clogging. The ability to remove this filter with a standard socket is a nice plus.

### ⭐⭐⭐⭐⭐ Good quality, as always with K&N. Love the 'nut' end for removal.
*by K***S on December 13, 2025*

Been using K&N filters on multiple vehicles for years now, and always happy with 'em. I'll never buy another filter without the 'nut' end for removal.

## Frequently Bought Together

- K&N Motorcycle Oil Filter: High Performance, Premium, Designed to be used with Synthetic or Conventional Oils, Wrench Off Nut: Fits Select Harely Davidson Motorcycles, KN-171B
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*Product available on Desertcart Spain*
*Store origin: ES*
*Last updated: 2026-01-25*